Newbie install help
Kevin Darcy
kcd at daimlerchrysler.com
Wed Nov 24 17:13:29 UTC 1999
Mark_Andrews at iengines.com wrote:
> > You could also do this the old-fashioned way and become a slave for their zon
> > es,
> > but then you'd have to define not only the top level of their domain, but
> > *every* *one* of their zones on all of your servers (otherwise queries in
> > subzones will use the global forwarder), and this could become a maintenance
> > nightmare. This alternative might be mandatory if the only servers of the
> > "other" intranet you can reach have recursion turned off, or you might choose
> > this option for performance reasons. In terms of resource usage, the optimal
> > choice of forwarding versus being a slave is driven by a number of factors,
> > including frequency and variety of queries for the zone, size of the zone,
> > frequency of changes to the zone, TTL/refresh settings for the zone, and whet
> > her
> > IXFR is available.
>
> Just add a empty forwarders clause to slave zone to disable
> forwarding for the subzones.
>
> e.g.
> options {
> forwarders { <IP ADDRESS LIST> };
> };
>
> zone "example" {
> type slave;
> masters { <IP ADDRESS LIST> };
> file "cache/example";
> // disable global forwarding for child zones
> forwarders { };
> };
>
> Queries for foo.sub.example will follow the normal resolution
> procedures.
>
> The same procedure can be applied to stub and master zones
> as well.
>
Oh, I didn't know you could have a forwarders directive for any zone that wasn't
"type forward". That's kinda neat.
- Kevin
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